Display panel or portion thereof with graphical user interface



FIG. 1 is a front view of a display panel or portion thereof withgraphical user interface showing our new design; and,

FIG. 2 is a front view thereof showing environmental matter.

The dot-dash broken lines illustrate a display panel or portion thereofand form no part of the claimed design. The dash-dash broken lines onthe display panel represent portions of the graphical user interfacethat form no part of the claimed design. The broken lines in FIG. 2showing a display device illustrate environmental matter that forms nopart of the claimed design.

CLAIM The ornamental design for a display panel or portion thereof withgraphical user interface, as shown and described.